Paint scraper



May 23, 1961 A. M. DYER PAINT SCRAPER Filed May 2a, 1958 FIG 3 ARTHURM.DYER 5 INVENTOR.

BYJM r United States Patent PAINT SCRAPER Arthur M. Dyer, 523 N. Graves,El Caion, Calif.

Filed May 26, 1958, Ser. No. 737,559

4 Claims. (Cl. 30-272) The present invention relates to a power actuatedpaint scraper and particularly to a paint scraper in which the scrapingelement is a razor blade and in which reciprocating movement is impartedto the blade.

The scraper of the present invention includes a main frame which carriesa motor, preferably of the electric type. This motor imparts movement tothe scraping element. Preferably the mechanism is such as to impartreciprocating movement to the scraping element.

The scraper, of course, extends outwardly of the frame and is providedwith a guard for guarding the cutting edge of the scraper and forguarding against accidental touching of the cutting edge.

Means is provided for resiliently connecting the guard with the frame soas to biasingly hold the cutting edge of the scraper off of a horizontalsurface when the guard rests on such surface and when the scraper is notbeing used, but which means yields under pressure so that the scrapertouches the surface during operation thereof.

Preferably two blades are provided, one extending from one side of theframe and the other from the opposite side of the frame. Each of theseblades is provided with a guard and each of the guards is resilientlyconnected with the frame, for the purpose hereinbefore specified.

Further objects and advantages of the present invention will be apparentfrom the following description, reference being had to the accompanyingdrawings wherein a preferred form of embodiment of the invention isclearly shown.

In the drawing:

Figure 1 is a bottom plan view of the improved scraper, the bottom Wallof the frame being removed for the purpose of showing the actuatingmechanism more clearly;

Figure 2 is a longitudinal sectional view taken substantially along theline 22 of Figure 1;

Figure 3 is a sectional view taken substantially along line 3-3 ofFigure 2, but on a somewhat larger scale;

Figure 4 is an end view of the scraper; and

Figure 5 is a side view of the scraper.

Referring more in detail to the drawing the scraper 20 includes a mainframe 22 including opposite side walls 24 and 26, a top wall 28 and abottom wall 30. The opposite ends 32 and 34 of the frame are open. Theside walls 24 and 26 are provided with two pairs of longitudinallyextending grooves 32 and 34 and these grooves function as crossheadguides for crossheads 36 and 38.

The top wall 28 of the frame 22 carries an electric motor 40 which isfed by a cable 42. The motor includes a shaft 44 which extends throughan opening 46 in the top wall 28 and such shaft carries a flywheel 48disposed within the frame 22 and directly below the top wall 28. Thebottom of the flywheel 48 is provided with an oval shaped groove 50.

Crosshead 36 carries an upwardly extending pin 52 at the inner endthereof and crosshead 38 carries a pin 54, also at the inner endthereof. These pins extend upwardly and into the groove 50 of theflywheel 48.

Thus it will be seen that as the flywheel 48 is rotated by the motor 40,reciprocating movement will be imparted to the crossheads 36' and 38,since the pins 52 and 54 must follow the rotation of the groove 50.

The outer end of the crosshead 36 carries an extension 56 and the outerend of crosshead 38 carries a similar extension 58. Scrapers in the formof razor blades 60 are removably carried by the outer end of extensions56 and 58, there being screws 62 provided for fastening the blades inposition.

Guards 64 and 66 are carried by a resilient mechanism includingresilient bars 68 and 70, preferably made of steel. These bars aresuitably secured to the opposite side walls 24 and 26 by clips 72. Theguards 64 and 66 each includes a front wall 74, disposed parallelly ofthe cutting edge 79 of the blades 60 and side walls 76 and 78. The rods68 and 70 are attached to these side walls.

As is seen more clearly from Figure 5 the rod 68 is disposed angularlywith respect to the frame 22. The rod 70 is likewise disposed on theopposite side of the frame 22 so that, when no downward pressure isapplied to the frame 22, the frame 22 is biased upwardly oif of thesurface 80, and likewise the cutting edges 79 are spaced from thesurface so that the surfaces 76 are not dulled by accidentally strikingextraneous substances.

:In using the device a suitable switch is actuated to cause rotation ofthe motor 40 which in turn will cause reciprocation of the razor blade60. Then by pressing downwardly upon the frame 22 the cutting edges 79will be forced against the surface 80, and in their reciprocation willremove paint spots, i.e. those splashed on window panes. The guards 64and 66 protect the attendant from the reciprocating movement of theblades.

While the form of embodiment of the present invention as hereindisclosed constitutes a preferred form, it is to be understood thatother forms might be adopted, all coming within the scope of the claimswhich follow.

I claim:

1. A paint scraper comprising in combination, a frame; a driving meanscarried by the frame; a driven means in horizontal force transmittingrelationship with said driving means; a paint removing means fastened tosaid driven means, said paint removing means having a cutting edge; andresilient means extending below the frame for biasingly holding thecutting edge off of a horizontal surface when the paint scraper is atrest on said surface, said resilient means being yieldable underextraneous pressure from above whereby the cutting edge is brought intocontact with said surface when sufiicient extraneous pressure is exertedfrom above.

2. A paint scraper comprising in combination, a frame; a driving meanscarried by the frame; a driven means in horizontal force transmittingrelationship with the driving means and including a scraper extendingbeyond the frame, said scraper having a cutting edge; guard means forthe scraper; and resilient means connecting the guard means and framefor biasingly holding the scraper off of a horizontal surface when theguard means is at rest on such surface said resilient means beingyieldable under extraneous pressure from above whereby the cutting edgesare brought into contact with said surface when suflicient extraneouspressure is exerted from above.

3. A paint scraper as defined in claim 2 characterized in that the guardextends forwardly of the cutting edge of the scraper.

4. A paint scraper as defined in claim 2 characterized in that the guardextends forwardly of the cutting edge of the scraper and beyond bothopposite sides of the scraper.

(References on following page) 3 References Cited in the file of thispatgnt 2,367,945 Jorgflnsen Jan. 23, 1945 2,422,005 Frank June 10, 1947UNITED STATES PATENTS 2,589,138 Reno Mar. 11, 1952 I 9191 laRue P 20, 02,601,183 Unsinger June 17, 1952 1,313,462 Brown 191 1919' 5 2,793,435Colicci May 28, 1957 2,161,335 Cherry June 6, 1939

